The application of marking technology is gradually deepening into every corner, from heavy machinery to small wires, without product identification. This technology is also widely used in Plastic Packaging containers, Plastic Film, plastic pipe, wire and cable, plastic parts and other products.

Han's JET STAR-30 is suitable for printing on various materials such as PVC and paper.
Types of coding technology

At present, inkjet technology mainly includes inkjet printing technology and laser jetting technology.

Inkjet printing technology

Inkjet printing technology, also known as non-contact printing, can be divided into continuous jet ink jet printers and on-demand ink jet ink jet printers according to different working principles of the printers.

Continuous jet ink jet printer is abbreviated as CIJ type. It uses ink to continuously eject ink from a single nozzle and breaks to form ink dots after crystal oscillation. The ink dots are scanned and formed on the surface of moving objects after charging and high voltage deflection. Most industrial inkjet systems use CIJ technology, which can reach speeds of up to 1000 feet per minute, much faster than on-demand ink jet printers, but the image quality is lower than the latter. CIJ printing equipment manufacturers such as Domino and Videojet are leaders in this field.

On-demand ink-jet printer is abbreviated as DOD. The nozzle of the ink supply system is composed of a plurality of high-precision valves. When the word is sprayed, the corresponding valve of the font is quickly opened and closed, and the ink is ejected by a constant internal pressure. The surface forms characters or graphics. A digital signal produces a drop of ink on paper, rather than an ink stream, which produces near-photographic quality. The DOD prints between 100 feet and 300 feet per minute. Many companies are currently developing high-speed DOD printing equipment that can be used for packaging applications.

Laser marking technology

Compared with ink printing technology, laser marking technology is a more advanced technology. This technique is primarily used for cauterization by cauterization and etching. Cautery, that is, the laser emits enough energy to remove the surface of the plastic material, such as the ink on the surface of the printed package. Etching, that is, the use of appropriate laser energy to melt the surface of the plastic material to form a groove. The extremely fine laser light speed after focusing is like a tool, which can remove the surface material of the object point by point without mechanical squeezing or mechanical stress, so it will not damage the processed object.

In addition to the general information labeling function, the anti-counterfeiting function of laser coding technology is more prominent. Laser marking technology has just begun its application in the Chinese market, but it will win a broader market due to its high reliability, low operating costs, ease of installation and operation, and precision of barcode printing.

In this field, Shenzhen Han's Laser Technology Co., Ltd. is one of the few companies that have taken the lead in China. At present, the company's laser marking machine mainly YAG series and CO2 series, adapted to ABS materials, epoxy resin, PVC, bulletproof rubber, polyurethane, glass and other materials marking.

Application in the plastics industry

Compared with ordinary printing methods such as pad printing or screen printing, inkjet printers have the advantages of non-contact printing, high-speed, high-efficiency, low-cost, instant printing, programmable, and can change the content of printing, and are increasingly affected by plastic. Product suppliers' favor.

Packaging Materials

Today, plastics have become one of the major packaging materials and are widely used in the packaging of food, beverages, tobacco and cosmetics. And these plastic materials are mostly PVC, PE and PET, which are the main printing objects in the packaging field of the printer.

Packaging materials require that the coding effect is not only clear, but also beautiful. Non-contact inkjet and laser printers do not touch the surface of the product during the marking process. Therefore, the printer can be excellent for both regular and irregular surfaces, round, square, and bumpy surfaces. Complete the mission. In addition, the use of plastic films in the packaging of products is large. If it is squeezed, the film will be damaged to a certain extent, directly affecting the aesthetic appearance of the package. The use of non-contact printing technology, there is no such worries. For example, Dain Laser's semiconductor-pumped laser marking machine (DP-R75) can directly mark through the plastic film on cigarette packaging and will not harm the film.

As food, beverage, tobacco and other products are closely related to life, the packaging materials have relatively high requirements for health. Since laser printers do not use ink for marking, they can ensure the cleanliness of products and production environment. Therefore, the application of laser marking technology to packaging materials has received great attention. Domino recently introduced the S200B-type scribing laser printer mainly for PET. Currently, laser printers on the market can provide identification schemes for PET sheets. However, because PET materials are relatively transparent, when lasers are applied to them and cannot be discolored, the effect is insignificant and difficult to identify. S200B type crossed laser jet printer combines "blue tube technology" with laser jet printer to make the coding color turned white, showing a crystal texture and clear effects.

Plastic pipe

There are many products in the plastic pipe industry, including drainage pipelines, aluminum plastic pipes, composite pipes and rubber hoses.

Some of these tubes are exposed to high temperatures and heat for a long time. They are required to have strong resistance to sunlight and high temperature environments, that is, to ensure the longevity of the labels. In addition, the high extrusion rate of plastic pipe also requires that the coding speed can be synchronized, while the tiny pipe requires a flexible and sophisticated coding technology.

The equipment of Videojet USA can better meet these special requirements. Its small-character ink jet printer series is suitable for operation in high-temperature and high-heat production environments, with clear, stable, and abrasion-resistant code. The minimum jet printing character can reach 0.8 mm. At the same time, the printer has an automatic metering function, continuous and instant printing, without affecting the continuous operation of the entire production process.

Wire and Cable

The application of coding technology in the wire and cable industry is also very extensive. Cable and wire products are difficult to identify brands or trademarks on their appearance. By printing product specifications and factory name labels, they can quickly identify genuine products.

The requirements of this product for marking are: easy to distinguish, hard to wear, and have good chemical resistance and UV resistance. There are many inkjet printers on the market that can meet these conditions. And, it allows the freedom of the angle and time of the printing: it can be a 360-degree printing angle, or can be printed on the bottom, side or top of the product; whether it is in raw material extrusion or in various cables When winding, printing can be performed either on a high-speed line or on a separate pallet.

For ink requirements

Due to the advantages of high-speed, high-efficiency, and low-cost, inkjet printing equipment is currently used in the market far more than laser inkjet technology. For inkjet printing equipment, the effect of printing is closely related to the performance of the ink. Today, consumers are demanding faster ink drying, better anti-counterfeiting performance, and more environmental protection.

Fast drying

The production speed of the production line is continuously increasing and it needs the cooperation of quick-drying ink. For example, in the processing of cigarette packs, the ink is dried immediately after being sprayed onto the surface of the product, and is firmly adhered to the surface of the product. It is not imprinted on other locations and the surface of the object is contaminated, and each ink is guaranteed to be sprayed. The printed product's logo is clear, complete and easily identifiable. It does not affect the entire production process and effectively reduces downtime.

Security

The anti-counterfeiting function of products is more and more valued by merchants. As the carrier of product identification, ink also assumes this responsibility. A UV visible anti-counterfeit ink that appears on the market has better anti-counterfeiting properties. This ink does not display under normal light and can only be seen under UV light.

There are many studies on small-character anti-counterfeiting inks in China, but there are few large-character anti-counterfeiting inks. Beijing Saiteng Power Technology Co., Ltd. developed the handheld ink jet printer and used the large-character anti-counterfeit ink in order to maximize the role of the handheld ink jet printer. The large-character anti-counterfeit invisible ink not only has high filtering accuracy, fast drying speed and strong adhesion, but also has a special anti-counterfeiting function for displaying blue light under ultraviolet irradiation.

Environmental protection

Environmental protection is also a topic of great concern to the general public. Ink and solvent are highly volatile substances that produce more chemical toxic residues and pollute the environment. Especially for food packaging, the environmental protection of ink is more important, and its chemical composition and odor may permeate through the film and packaging into the food and endanger human health. In order to prevent this incident, the United States even prohibits the use of ink jets on the inner packaging of drugs. At present, Domino, Videojet and other companies are very focused on the development of environmentally friendly ink.

In addition, in the food packaging field, some foods also require the ink to be edible so that they can be printed directly on the food surface or on its inner packaging. For those foods that need to be refrigerated, they are required to be able to maintain the same character even after the food has been chilled for about 0°C. Therefore, the low-temperature resistance of the ink is also very important.

At present, the development of China's logo industry is in full swing, and the growth rate is very high. At the same time, the market's requirements for marking technology are also changing. The reliability and stability of inkjet printer equipment will be an important trend in the future technological development. The speed of the domestic plastic product line is increasingly high, and there is no doubt that the market for inkjet printers with rapid performance will be even wider.